Remove .env.local file and update middleware, page, and auth callback files to enhance logging and user experience. Translate comments and console logs to English for better clarity. Refactor Create Short URL form and Debug page for improved user feedback and error handling.

app/page.tsx

@@ -6,32 +6,32 @@ import { useAuth } from '@/lib/auth';
 export default function Home() {
   const { user, isLoading } = useAuth();
   
-  // 添加调试日志
-  console.log('根页面状态:', { isLoading, userAuthenticated: !!user });
+  // Add debug logs
+  console.log('Root page state:', { isLoading, userAuthenticated: !!user });
   
   useEffect(() => {
     if (!isLoading) {
-      console.log('准备从根页面重定向', { isLoggedIn: !!user });
+      console.log('Preparing to redirect from root page', { isLoggedIn: !!user });
       
-      // 使用硬重定向确保页面完全刷新
+      // Use hard redirect to ensure full page refresh
       if (user) {
-        console.log('用户已登录，重定向到分析页面');
+        console.log('User is logged in, redirecting to analytics page');
         window.location.href = '/analytics';
       } else {
-        console.log('用户未登录，重定向到登录页面');
+        console.log('User is not logged in, redirecting to login page');
         window.location.href = '/login';
       }
     }
   }, [isLoading, user]);
   
-  // 显示加载指示器，并包含状态信息
+  // Display loading indicator with status information
   return (
     <div className="flex items-center justify-center min-h-screen">
       <div className="text-center">
         <div className="animate-spin rounded-full h-16 w-16 border-t-2 border-b-2 border-blue-500 mx-auto"></div>
-        <p className="mt-4 text-lg text-gray-700">正在加载...</p>
+        <p className="mt-4 text-lg text-gray-700">Loading...</p>
         <p className="mt-2 text-sm text-gray-500">
-          状态: {isLoading ? '检查登录中' : (user ? '已登录' : '未登录')}
+          Status: {isLoading ? 'Checking login status' : (user ? 'Logged in' : 'Not logged in')}
         </p>
       </div>
     </div>